”Removing unneeded redistributables is an easy way to recover space while removing unwanted videos and unneeded localizations can be dangerous, but so long as you do not permanently delete the files, you can always put them back. Compacting games can tremendously reduce install size, but can increase loading times and potentially cause games to no longer load. It takes some experimentation and trial and error, but can have such an impact it may be worth consideration just the same.”



Link: OCC